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UNIXSHELL SCRIPT QUESTION: What will this script output: v1=7 v2=3 v3=$(($v1 * $v2)) echo '$v1 * $v2 is' $v3

UNIX\SHELL SCRIPT QUESTION:

What will this script output:

v1="7" v2="3" v3=$(($v1 * $v2)) echo '$v1 * $v2 is' "$v3"

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